"Founded in 2004 and formerly known as Arastra, Arista
shipped its first product releases in late 2007. The core of its
lineup is its 7100 platform, which is a 10 Gigabit Ethernet
switching platform that has a Linux-based operating system at its
core, dubbed Arista EOS.
"The goal with EOS is to create a highly scalable platform that
is specifically tailored for the needs of cloud computing in the
datacenter, Karam said. EOS is based on a Red Hat Fedora Linux core
that Arista said has been modified and hardened."